this Africa in Transition post by John Campbell. His bottom line:
So what is going on here? The belief that certain elements in the upper reaches of the military in collusion with northern politicians are using Boko Haram to make the northern part of the country ungovernable in the run-up to the 2015 elections is widely held, especially in the southern part of the country. If the court martials [sic] are taking place, and if they are credible, then there would, indeed, be evidence of some military collusion with Boko Haram, if not necessarily with northern politicians. But the “ifs” are important here. Assuming trials are taking place, and the defense spokesman reference to “a lot is happening” would seem to indicate that some sort of military judicial process is underway, despite statements to the contrary, the issue would be their credibility. That remains to be seen.